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Omega 321 (Lemania CH27 C12)

Mechanical c. 1946 Chronograph
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Notes

1946-1968 (27CHRO C12 T2 until 1949), >40000 Breguet hairspring regulator with catch device for hairspring (cf. Lemania S27)

Dimensions

Width27 lignes (60.91 mm)
Height6.74 mm
Stem height1.67 mm
Hands (H × M × S)1.9 × 1.05 × 0.22 mm

Technical data

Beat rate18,000 vph (2.5 Hz)
Lift angle—
Power reserve44 h
Jewels—
Shock protection—
Mobile stud carrierNo

Complications

Self windingNo
Date No
Day No
HackingNo
ChronographYes

Mainspring

GR code—
Height10 mm
Thickness0.11 mm
Length—
Barrel diameter1.3 mm

Overview

TypeMechanical
Manufacturer Omega
Yearc. 1946
Family —
Clone of —

Documents

None

Updated 7 days ago · 0 revisions